EP3760334A1 - Rouleau de moule de gaufrage gravé et gaufré ayant une structure imbriquée servant à fabriquer un tuyau métallique gaufré - Google Patents

Rouleau de moule de gaufrage gravé et gaufré ayant une structure imbriquée servant à fabriquer un tuyau métallique gaufré Download PDF

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Publication number
EP3760334A1
EP3760334A1 EP18908016.1A EP18908016A EP3760334A1 EP 3760334 A1 EP3760334 A1 EP 3760334A1 EP 18908016 A EP18908016 A EP 18908016A EP 3760334 A1 EP3760334 A1 EP 3760334A1
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EP
European Patent Office
Prior art keywords
roller
intaglio
embossing pattern
pattern unit
relief
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP18908016.1A
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German (de)
English (en)
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EP3760334A4 (fr
EP3760334B1 (fr
Inventor
Bohyun Lee
Changyub LEE
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Individual
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Individual
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Publication of EP3760334A4 publication Critical patent/EP3760334A4/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H8/00—Rolling metal of indefinite length in repetitive shapes specially designed for the manufacture of particular objects, e.g. checkered sheets
    • B21H8/005—Embossing sheets or rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/08—Making tubes with welded or soldered seams
    • B21C37/0818—Manufacture of tubes by drawing of strip material through dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/08—Making tubes with welded or soldered seams
    • B21C37/083—Supply, or operations combined with supply, of strip material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/156—Making tubes with wall irregularities
    • B21C37/158—Protrusions, e.g. dimples
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H8/00—Rolling metal of indefinite length in repetitive shapes specially designed for the manufacture of particular objects, e.g. checkered sheets
    • B21H8/02—Rolls of special shape

Definitions

  • the present invention relates to a mutual engagement type intaglio-relief embossing press roller used in manufacture of an embossed metal pipe, and more particularly to a mutual engagement type intaglio-relief embossing press roller configured such that, in order to solve a problem in that, at the time of manufacture of an embossed pipe using a pipe mill configured to manufacture a metal pipe, a concave-convex embossed pattern formed on an embossed metal sheet is deformed while the embossed metal sheet passes through male-female engagement type horizontal curving rollers and engagement type horizontal and vertical rounding rollers of the pipe mill, whereby welding is impossible due to mismatch of the concave-convex embossed pattern, the mutual engagement type intaglio-relief embossing press roller forms small-width planes at opposite side edges of the embossed metal sheet in the longitudinal direction so as to be lower than an embossed pattern layer, whereby it is possible to weld a seam portion formed at
  • a pipe mill is an apparatus that rounds a metal sheet that is successively supplied, such as a stainless steel sheet, an iron sheet, a copper sheet, or a brass sheet, through a process of gradually increasing the curvature of the metal sheet and performs welding in the state in which opposite side ends of the rounded metal sheet are matched with each other to manufacture a circular metal pipe.
  • a metal sheet that is successively supplied, such as a stainless steel sheet, an iron sheet, a copper sheet, or a brass sheet
  • embossed pipe manufacturing technology for increasing the curvature of a smooth metal sheet while the metal sheet passes between horizontally installed male and female engagement type curving rollers using a metal pipe obtained by melting and extruding metal or a pipe mill, shaping the metal sheet in the form of a pipe while the curved metal sheet passes between a plurality of rounding rollers installed horizontally and vertically so as to be engaged with each other in symmetry, and welding opposite side ends of the shaped pipe in the state of being matched with each other to manufacture an embossed pipe having a seam portion formed in the longitudinal direction is used.
  • Korean Registered Patent No. 10-1611572 (registered on April 5, 2016 ) discloses an embossing technology entitled PATTERN FORMING MACHINE FOR METAL PIPES, wherein, when a plunger is moved rearwards, an inner die installed in a housing is pushed by the plunger and thus is moved toward the inner circumferential surface of a metal pipe, and a relief pattern formed on the outer circumferential surface of the inner die is engaged with an intaglio pattern formed on the inner circumferential surface of an outer die, whereby patterns are formed on the surfaces of the metal pipe located between the inner die and the outer die.
  • Korean Registered Patent No. 10-404895 discloses a method of forming embossed protrusions on a metal pipe entitled EMBOSSED PROTRUSION FORMING APPARATUS FOR METAL PIPES, wherein a movable fixing stand fixedly installed at the middle of a frame, left and right movable fixing stands fixedly installed at the frame, and first moving force generation members connected to the rear sides thereof are moved inside a plurality of circular casings so as to be matched therewith in order to form a cylindrical casing having a plurality of circular casing through-holes, a metal pipe is inserted into the cylindrical casing and is fixed therein so as to be in tight contact therewith, a pipe-shaped core having punches mounted in a plurality of through-holes formed in the pipe-shaped circumferential surface thereof is inserted into the metal pipe and is fixed therein so as to be in tight contact therewith such that the casing through-holes formed in the inner surface of the cylindrical casing are matched
  • Korean Registered Patent No. 10-1399231 (registered on May 19, 2014 ) discloses an apparatus for forming circular recesses in a metal pipe entitled PIPE EMBOSSING APPARATUS HAVING IMPROVED STRUCTURE, wherein the apparatus includes a cylinder unit including cylinders configured to be operated by pneumatic pressure and pistons configured to be operated by the cylinders and embossing protrusions formed on the tips of the pistons, and the cylinders of the apparatus strike the embossing protrusions by pneumatic pressure at predetermined intervals based on the center line of the metal pipe in the vertical direction to form circular recesses on the metal pipe.
  • Korean Registered Patent No. 10-1017890 registered on February 21, 2011
  • Korean Registered Patent No. 10-1604011 registered on March 10, 2016
  • PIPE BELLOWS FORMING APPARATUS are disclosed as technologies related to an apparatus for embossing the outer circumferential surface of a pipe as described above.
  • the embossed pattern is simple and thus it is not possible to obtain a delicate and sophisticated embossed pattern, and metal pipes cut to a predetermined length are mounted in the apparatus one by one such that the outer circumferential surface of each of the metal pipes is embossed, which is very inefficient.
  • the present invention solves the above problems of the embossed metal pipe manufacturing apparatus and thus is capable of efficiently manufacturing an embossed pipe having a sophisticated and fine embossed pattern using the pipe mill.
  • One of the problems is that, in the case in which a flat metal sheet passes through the pipe mill, high pressure from male-female engagement type curving rollers, which are installed horizontally and vertically, is applied to the metal sheet while the metal sheet passes between the male-female engagement type curving rollers, whereby the metal sheet is curved while being plastically deformed.
  • an embossed metal sheet has an apparent volume equivalent to twice the thickness of a metal sheet before embossing due to formation of a concave-convex embossed pattern thereon.
  • the heights from the protruding portions of the embossed patterns to the bottom surfaces of the metal sheets after embossing become 1 mm and 2 mm, respectively, while defining a space therein.
  • the embossed pattern has difficulty maintaining the original shape thereof and thus is distorted while the embossed metal sheet passes through the male-female engagement type curving rollers of the pipe mill. In order to solve this, it is necessary to accurately adjust the distance between the male-female engagement type curving rollers depending on the embossed degree.
  • the embossed pattern is excessively deformed, and at the same time the width of the embossed metal pipe is increased, whereby the sides of the embossed metal pipe may overlap each other in the symmetrical engagement type rounding rollers.
  • the distance between the male-female engagement type curving rollers is large, it is not possible to sufficiently curve the metal sheet.
  • Another problem is related to the seam portion formed at the embossed metal pipe in the longitudinal direction. That is, in the case in which the embossed pipe is manufactured from the embossed metal sheet using the pipe mill, it is substantially impossible to weld the seam portion formed at the embossed pipe in the longitudinal direction.
  • the present invention relates to a mutual engagement type intaglio-relief embossing press roller used in manufacture of an embossed metal pipe as a means for solving the above problems.
  • the embossed pipe using the pipe mill, in the case in which the embossed metal sheet or the embossed metal band, embossed by the intaglio-relief engagement embossing roller having high dimensional stability, passes through the pipe mill, the embossed pattern of the embossed metal sheet, which is further thinned by embossing, is deformed and thus the height of the embossed pattern is changed while passing between the horizontal male-female engagement type curving rollers, each of which is made of a high-strength metal material, and between the horizontal and vertical symmetrical engagement type rounding rollers.
  • the present invention relates to a mutual engagement type intaglio-relief embossing press roller used in manufacture of an embossed metal pipe configured such that, in manufacturing an embossed metal pipe using a conventional pipe mill configured to manufacture a circular smooth metal pipe, the mutual engagement type intaglio-relief embossing press roller embosses a flat metal sheet in a process before the metal pipe is introduced into the pipe mill so as to be used to manufacture an embossed metal pipe through the pipe mill, and it is an object of the present invention to provide a mutual engagement type intaglio-relief embossing press roller used in manufacture of an embossed metal pipe that is capable of providing a more sophisticated and delicate embossed pattern than an embossed pipe manufactured by a conventional embossed pipe manufacturing apparatus, welding a seam portion formed at an embossed pipe in the longitudinal direction at the time of manufacture of the embossed pipe using a pipe mill, preventing a scar of the seam portion from being exposed to the outside, and maximizing production capability
  • the above object can be accomplished by the provision of a mutual engagement type intaglio-relief embossing press roller used in manufacture of an embossed metal pipe, the mutual engagement type intaglio-relief embossing press roller including an upper roller having a relief embossing pattern formed thereon and a lower roller having an intaglio embossing pattern formed thereon, the upper roller and the lower roller being configured to be rotated in the state of being engaged with each other, wherein the upper roller includes a roller body, shafts formed at opposite ends of the roller body, a relief embossing pattern unit formed on the surface of the roller body, and first left and right ends formed at opposite side ends of the roller body so as to be lower than the relief embossing pattern unit, and wherein the lower roller includes a roller body, shafts formed at opposite ends of the roller body, an intaglio embossing pattern unit formed on the surface of the roller body, and second left
  • a mutual engagement type intaglio-relief embossing press roller used in manufacture of an embossed metal pipe
  • the mutual engagement type intaglio-relief embossing press roller including an upper roller having a relief embossing pattern formed thereon and a lower roller having an intaglio embossing pattern formed thereon, the upper roller and the lower roller being configured to be rotated in a state of being engaged with each other
  • the upper roller includes a roller body, shafts formed at opposite ends of the roller body, a relief embossing pattern unit formed on the surface of the roller body, a band-shaped groove formed on the surface of the roller body in the rotational direction of the roller so as to be lower than the relief embossing pattern unit in order to partition the relief embossing pattern unit at predetermined intervals, first left and right ends formed at opposite side ends of the roller body so as to be lower than the relief embossing pattern unit
  • a mutual engagement type intaglio-relief embossing press roller used in manufacture of an embossed metal pipe according to the present invention has the following effects.
  • a mutual engagement type intaglio-relief embossing press roller (1) used in manufacture of an embossed metal pipe including an upper roller (10) having a relief embossing pattern formed thereon and a lower roller (20) having an intaglio embossing pattern formed thereon, the upper roller and the lower roller being configured to be rotated in the state of being engaged with each other, wherein the upper roller (10) includes a roller body (101), shafts (102) formed at opposite ends of the roller body, a relief embossing pattern unit (103) formed on the surface of the roller body (101), and first left and right ends (105, 106) formed at opposite side ends of the roller body (101) so as to be lower than the relief embossing pattern unit (103), and wherein the lower roller (20) includes a roller body (201), shafts (202) formed at opposite ends of the roller body, an intaglio embossing pattern unit (203) formed on
  • FIG. 1 is an overall perspective view of an embossed metal pipe manufacturing apparatus including an intaglio-relief embossing press roller according to the present invention.
  • a metal sheet from an uncoiler is first supplied to an intaglio-relief embossing press roller 1 via a guide roller.
  • various kinds of metal sheets may be used as the metal sheet.
  • a stainless metal plate is used as the metal sheet.
  • the metal sheet supplied to the intaglio-relief embossing press roller 1 passes between an upper roller 10 having a relief embossing pattern formed thereon and a lower roller 20 having an intaglio embossing pattern formed thereon while the upper roller and the lower roller are rotated in the state of being engaged with each other, whereby the surfaces of the metal sheet are embossed.
  • the embossed metal sheet discharged through the intaglio-relief embossing press roller 1 is subjected to several steps (STEP 1 to STEP 7) of a pipe mill configured to manufacture a metal pipe, whereby an embossed metal pipe having a seam portion formed in the longitudinal direction is manufactured. Finally, the seam portion is welded, and therefore an entirely unified embossed metal pipe is completed.
  • the present invention relates to the intaglio-relief embossing press roller 1 shown in FIG. 1 .
  • the present invention relates to a mutual engagement type intaglio-relief embossing press roller 1 used in manufacture of an embossed pipe using a conventional pipe mill configured to manufacture a metal pipe having a smooth surface, wherein the mutual engagement type intaglio-relief embossing press roller is capable of providing a sophisticated and delicate embossed pattern, welding a seam portion formed at the embossed pipe in the longitudinal direction at the time of manufacture of the embossed pipe using the pipe mill, forming a small-width groove in a weld seam portion in order to prevent a scar of the seam portion from being exposed to the outside, forming at least one small-width groove identical to the small-width seam groove along the circumferential surface of the roller at predetermined intervals in order to partition the embossed pattern and thus to provide a decorative effect together with the sophisticated and delicate embossed pattern, and maximizing production capability together with the properties of the pipe mill capable of performing a continuous process.
  • the mutual engagement type intaglio-relief embossing press roller 1 according to the present invention may be realized in various embodiments.
  • the mutual engagement type intaglio-relief embossing press roller 1 will be described based on four embodiments of a mutual engagement type intaglio-relief embossing press roller 1 having the same embossing pattern and two embodiments of a mutual engagement type intaglio-relief embossing press roller 1 having an embossing pattern different from the embossing pattern of the four embodiments.
  • a mutual engagement type intaglio-relief embossing press roller 1 includes an upper roller 10 having a relief embossing pattern formed thereon and a lower roller 20 having an intaglio embossing pattern formed thereon, the upper roller and the lower roller being configured to be rotated in the state of being engaged with each other, wherein the upper roller 10 includes a roller body 101, shafts 102 formed at opposite ends of the roller body, a relief embossing pattern unit 103 formed on the surface of the roller body 101, and first left and right ends 105 and 106 formed at opposite side ends of the roller body 101 so as to be lower than the relief embossing pattern unit 103, and wherein the lower roller 20 includes a roller body 201, shafts 202 formed at opposite ends of the roller body, an intaglio embossing pattern unit 203 formed on the surface of the roller body 201, and second left and right ends
  • a band-shaped groove 104 configured to partition the relief embossing pattern unit 103 and a band-shaped protrusion 204 configured to partition the intaglio embossing pattern unit 203 are not formed.
  • a mutual engagement type intaglio-relief embossing press roller 1 includes a band-shaped groove 104 and a band-shaped protrusion 204.
  • a mutual engagement type intaglio-relief embossing press roller 1 includes an upper roller 10 having a relief embossing pattern formed thereon and a lower roller 20 having an intaglio embossing pattern formed thereon, the upper roller and the lower roller being configured to be rotated in the state of being engaged with each other, wherein the upper roller 10 includes a roller body 101, shafts 102 formed at opposite ends of the roller body, a relief embossing pattern unit 103 formed on the surface of the roller body 101, a band-shaped groove 104 formed on the surface of the roller body 101 in the rotational direction of the roller so as to be lower than the relief embossing pattern unit 103 in order to partition the relief embossing pattern unit 103 at predetermined intervals, and first left and right ends 105 and 106 formed at opposite side ends of the roller body 101 so as to be lower than the relief embossing pattern unit 103, and
  • the protrusion 204 of the lower roller 20 is configured to be inserted into the groove 104 of the upper roller 10.
  • a mutual engagement type intaglio-relief embossing press roller 1 according to a third embodiment is different from the mutual engagement type intaglio-relief embossing press roller 1 according to each of the first and second embodiments in terms of the structure of opposite side ends of the roller body 101 of the upper roller 10.
  • Left and right inclined surface formation portions 107 and 108 are formed at opposite side ends of the roller body 101 of the upper roller 10 constituting the mutual engagement type intaglio-relief embossing press roller 1 according to the third embodiment.
  • the mutual engagement type intaglio-relief embossing press roller 1 includes an upper roller 10 having a relief embossing pattern formed thereon and a lower roller 20 having an intaglio embossing pattern formed thereon, the upper roller and the lower roller being configured to be rotated in the state of being engaged with each other, wherein the upper roller 10 includes a roller body 101, shafts 102 formed at opposite ends of the roller body, a relief embossing pattern unit 103 formed on the surface of the roller body 101, first left and right ends 105 and 106 formed at opposite side ends of the roller body 101 so as to be lower than the relief embossing pattern unit 103, and left and right inclined surface formation portions 107 and 108 extending from the first left and right ends 105 and 106 in the lateral direction so as to be integrally formed therewith, the left and right inclined surface formation portions protruding outwards from points extending from the first left and right
  • a band-shaped groove 104 configured to partition the relief embossing pattern unit 103 and a band-shaped protrusion 204 configured to partition the intaglio embossing pattern unit 203 are not formed.
  • a mutual engagement type intaglio-relief embossing press roller 1 includes a band-shaped groove 104 and a band-shaped protrusion 204.
  • the mutual engagement type intaglio-relief embossing press roller 1 includes an upper roller 10 having a relief embossing pattern formed thereon and a lower roller 20 having an intaglio embossing pattern formed thereon, the upper roller and the lower roller being configured to be rotated in the state of being engaged with each other, wherein the upper roller 10 includes a roller body 101, shafts 102 formed at opposite ends of the roller body, a relief embossing pattern unit 103 formed on the surface of the roller body 101, a band-shaped groove 104 formed on the surface of the roller body 101 in the rotational direction of the roller so as to be lower than the relief embossing pattern unit 103 in order to partition the relief embossing pattern unit 103 at predetermined intervals, first left and right ends 105 and 106 formed at opposite side ends of the roller body 101 so as to be lower than the relief embossing pattern unit 103, and left and right
  • a mutual engagement type intaglio-relief embossing press roller 1 according to each of fifth and sixth embodiments has an embossing pattern different from the embossing pattern of the intaglio-relief embossing press roller 1 according to each of the first to fourth embodiments.
  • the intaglio-relief embossing press roller 1 according to the fifth embodiment has substantially the same structure as the intaglio-relief embossing press roller 1 according to the second embodiment shown in FIG. 4 except for the embossing pattern.
  • the intaglio-relief embossing press roller 1 according to the sixth embodiment has substantially the same structure as the intaglio-relief embossing press roller 1 according to the fourth embodiment shown in FIG. 6 except for the embossing pattern.
  • the intaglio-relief embossing press roller 1 is configured such that the upper roller 10 and the lower roller 20, each of which is made of a high-rigidity metal material, are rotated in the state of being engaged with each other.
  • a pattern constituting the relief embossing pattern unit 103 and a pattern constituting the intaglio embossing pattern unit 203 are formed on the surface of the upper roller 10 and the surface of the lower roller 20, respectively, and the relief embossing pattern unit 103 and the intaglio embossing pattern unit 203 are formed so as to be engaged with each other.
  • the pattern harmonizes with relief and intaglio volumes and thus has a direct influence on the aesthetics of the embossed metal sheet.
  • the pattern may be selected depending on taste.
  • each of the embossing pattern units 103 and 203 shown in FIGS. 2 to 6 has a long rectangular pattern with round ends
  • each of the embossing pattern units 103 and 203 shown in FIGS. 7 and 8 has a pattern with a quadrangular pyramidal protrusion.
  • the intaglio-relief embossing press roller 1 according to each of the first and third embodiments shown in FIGS. 2 , 3 , and 5 and the intaglio-relief embossing press roller 1 according to each of the second, fourth, fifth, and sixth embodiments shown in FIGS. 4 , 6 , 7, and 8 are different from each other in terms of whether the small-width band-shaped groove 104 and the small-width band-shaped protrusion 204 are formed on the upper roller 10 and the lower roller 20, respectively.
  • the band-shaped groove 104 and the band-shaped protrusion 204 are configured to be rotated in the state of being engaged with each other when the upper roller 10 and the lower roller 20 are rotated in the state in which the metal sheet is interposed therebetween. That the band-shaped groove 104 and the band-shaped protrusion 204 are rotated in the state of being engaged with each other means that the band-shaped protrusion 204 pushes the metal sheet into the groove 104 during rotation thereof.
  • An embossing pattern is partitioned along the circumferential surface of each of the upper roller and the lower roller at predetermined intervals by a corresponding one of the small-width band-shaped groove 104 and the small-width band-shaped protrusion 204 formed as described above, and a decorative effect may be provided together with the embossing pattern by the small-width groove 104 partitioned as described above.
  • the mutual engagement type intaglio-relief embossing press roller 1 is characterized by the first left and right ends 105 and 106 and the second left and right ends 205 and 206 formed respectively at the opposite side ends of the upper roller 10 and the lower roller 20, as shown in FIGs. 2 to 10 .
  • the first left and right ends 105 and 106 and the second left and right ends 205 and 206 are important in solving a welding problem that occurs at the time of manufacture of the embossed pipe using the embossed metal sheet.
  • the first left and right ends 105 and 106 and the second left and right ends 205 and 206 formed at the opposite side ends of the intaglio-relief embossing press roller 1 provide small-width planes to opposite side surfaces of the embossed metal sheet, whereby it is possible to solve a problem in that, at the time of manufacture of the embossed pipe using a conventional pipe mill configured to manufacture a smooth metal pipe, a concave-convex embossed pattern formed on the embossed metal sheet is deformed or welding is impossible due to mismatch of the concave-convex embossed pattern formed at the seam portion in the longitudinal direction.
  • the present invention is technically characterized by the inclined surfaces formed at the opposite ends of the metal sheet that is introduced into the intaglio-relief embossing press roller 1.
  • the inclined surfaces are formed at the flat metal sheet simultaneously with embossing of the flat metal sheet.
  • a metal sheet having no inclined surfaces formed at opposite ends thereof is introduced into the intaglio-relief embossing press roller 1 in order to manufacture an embossed metal sheet having inclined surfaces formed at opposite ends thereof.
  • the embossed metal sheet having the inclined surfaces formed at the opposite ends thereof manufactured through the above processes is shown in FIGS. 11 and 14 .
  • the metal sheet is embossed using the intaglio-relief embossing press roller 1, and at the same time the inclined surfaces are formed at the opposite ends of the flat metal sheet by the provision of the left and right inclined surface formation portions 107 and 108 formed at the opposite side surfaces of the upper roller 10, as shown in FIGS. 10 and 13 .
  • the angle ⁇ 1 between each of the left and right inclined surface formation portions 107 and 108 and a corresponding one of the first left and right ends 105 and 106 ranges from 110 to 135 degrees.
  • the inclined surfaces formed at the opposite ends of the metal sheet by the left and right inclined surface formation portions 107 and 108 are brought into contact with each other to form a weld seam portion 109 having a V-shaped groove 109a.
  • the interior angle ⁇ 2 of the V-shaped groove 109a ranges from 20 to 90 degrees.
  • the embossed metal sheet passes through a curving roller and a rounding roller of the pipe mill so as to be formed as a round pipe.
  • the small-width inclined surfaces of the pipe are brought into contact with each other to form a small-width V-shaped groove 109a.
  • the V-shaped groove 109a is melted and fused by welding using the same material, whereby a weld seam portion 109 identical to the groove 104 is formed.
  • the weld seam portion 109 and the groove 104 form a kind of pattern, whereby aesthetics are improved in addition to the provision of the pattern.
  • Each of the groove 104 and the weld seam portion 109 has a small width, more specifically a width of 1.6 mm or less.
  • the width L1 of each of the first left and right ends 105 and 106 formed at the opposite side ends of the upper roller 10 according to the present invention is set to 1/2 the width L2 of the groove 104.
  • the sum of the width of the first left end 315 and the width of the first right end 316 is equal to the width of the groove 104.
  • FIG. 15 is a side sectional view schematically showing an embodiment of an embossed metal pipe manufactured using the embossed metal sheet manufactured through the intaglio-relief embossing press roller according to the present invention
  • FIG. 17 is a side sectional view showing various forms of a weld seam portion formed in the embossed metal pipe of FIG. 15 .
  • an embossed metal pipe manufactured by introducing the embossed metal sheet manufactured using the intaglio-relief embossing press roller 1 according to the present invention into the pipe mill has a weld seam portion 109 formed in the longitudinal direction, and a small-width V-shaped groove 109a is formed in the weld seam portion 109.
  • the V-shaped groove 109a is melted and fused by welding using the same material, whereby a seam groove identical to at least one partition groove formed in the circumferential surface of the roller at predetermined intervals is formed.
  • the weld seam portion 109 formed at the embossed metal pipe in the longitudinal direction is integrally connected to the embossed metal pipe through neat and sophisticated welding, and at the same time forms a seam groove identical to another partition groove configured to partition the embossed pattern, whereby an aesthetically pleasing design is exhibited and thus a decorative effect is provided.
  • FIG. 16 is a view showing the state in which the V-shaped groove 109a in the embossed metal pipe shown in FIG. 15 is welded.
  • FIG. 17 shows that the weld seam portion 109 according to the embodiment shown in FIG. 15 may be modified in various forms. It is obvious that the weld seam portion 109 including the V-shaped groove may have various other forms in addition to the forms shown in FIG. 17 .
  • the weld seam portion 109 is characterized in that opposite ends of the metal sheet are shaped so as to have inclined surfaces by the left and right inclined surface formation portions 107 and 108, whereby the central portion of the weld seam portion is formed so as to have a V-shaped structure when viewed in a side sectional view.
  • the V-shaped structure may be identically formed to diversify the shape of the surroundings thereof.
  • An intaglio-relief embossing press roller is capable of providing a more sophisticated and delicate embossed pattern than an embossed pattern formed on a smooth pipe by a conventional embossing apparatus.
  • welding is possible and a small-width seam groove is formed in a weld seam portion in the case in which an embossed metal pipe formed by the engagement type intaglio-relief embossing press roller is used, whereby a weld portion is not exposed to the outside, and at least one circumferential groove identical to the small-width seam groove is formed together with the small-width seam groove, whereby a decorative effect is improved together with the sophisticated embossed pattern. Consequently, the present invention has high industrial applicability.
EP18908016.1A 2018-02-28 2018-12-24 Rouleau de moule de gaufrage gravé et gaufré ayant une structure imbriquée servant à fabriquer un tuyau métallique gaufré Active EP3760334B1 (fr)

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KR1020180024246A KR101884364B1 (ko) 2018-02-28 2018-02-28 엠보싱 금속 파이프 제조에 사용되는 상호 맞물림 구조의 음양각 엠보싱 금형 롤러
PCT/KR2018/016555 WO2019168260A1 (fr) 2018-02-28 2018-12-24 Rouleau de moule de gaufrage gravé et gaufré ayant une structure imbriquée servant à fabriquer un tuyau métallique gaufré

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WO2021254884A2 (fr) * 2020-06-15 2021-12-23 Hydro Extruded Solutions As Appareil et procédé de préformage de bande métallique pour la fabrication de tubes formés par rouleaux et soudés

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CN111432953B (zh) 2021-10-15
WO2019168260A1 (fr) 2019-09-06
JP7036326B2 (ja) 2022-03-15
EP3760334A4 (fr) 2021-12-01
CN111432953A (zh) 2020-07-17
KR101884364B1 (ko) 2018-08-01
EP3760334B1 (fr) 2023-12-27
JP2021509361A (ja) 2021-03-25

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